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如何选择机器学习算法 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术

...s (making sure to try different parameters within each algorithm as well), and select the best one by cross-validation. But if you’re simply looking for a “good enough” algorithm for your problem, or a place to start, here are some general guidelines I’ve found to work well over the ...
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Correct Bash and shell script variable capitalization

I run across many shell scripts with variables in all caps, and I've always thought that there is a severe misunderstanding with that. My understanding is that, by convention (and perhaps by necessity long ago), environment variables are in all-caps. ...
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Best way to implement keyboard shortcuts in a Windows Forms application?

... Hmm, no, the Form's KeyDown event handler is quite distinct from a menu item's Click event handler. You still do the exact same way, either call the event handler method directly (no need for it to be exclusively called by an event) or refactor the common log...
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Move all files except one

... If you use bash and have the extglob shell option set (which is usually the case): mv ~/Linux/Old/!(Tux.png) ~/Linux/New/ share | improve...
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How do I convert a IPython Notebook into a Python file via commandline?

I'm looking at using the *.ipynb files as the source of truth and programmatically 'compiling' them into .py files for scheduled jobs/tasks. ...
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How to update npm

...nager download page https://nodejs.org/en/download/ For historical understanding: Chis Lea was maintaining his PPA but now joined forces with nodesource. share | improve this answer | ...
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Which keycode for escape key with jQuery

...p vs. keypress" - that's incorrect, dkamins. keypress doesn't seem to be handled consistently between browsers (try out the demo at api.jquery.com/keypress in IE vs Chrome vs Firefox -- sometimes it doesn't register, and both 'which' and 'keyCode' vary) whereas keyup is consistent. e.which is the ...
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Limiting floats to two decimal points

...ing point numbers that not all numbers can be represented exactly. The command line is just showing you the full floating point form from memory. With floating point representation, your rounded version is the same number. Since computers are binary, they store floating point numbers as an integer ...
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Undo working copy modifications of one file in Git?

... what's the difference between HEAD and HEAD^? – hasen Mar 28 '09 at 22:06 63 ...
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How do you sort a dictionary by value?

...consisting of keys & values, by value. For example, I have a hash of words and respective frequencies, that I want to order by frequency. ...